Dreamcast Widescreen Hacks

I guess now would be a good time to edit the main post with all the codes discovered so far?

 

I agree with you. Everybody made a nice work btw!

 

Here is a widescreen code and snow hack for shenmue PAL version:

02231EF8 43700000



and some other Shenmue codes:

Shenmue 1 US: (Updated 2015-10-25)
02230250 43800000 (Original Code, best for VGA)
or
02230250 438E38E4 for equivalent to 720x480 (DVD resolution)
or
02230250 43700000 for equivalent to 854x480 (Actual 16x9)

Shenmue 2 EU: (Updated 2015-10-25)
0231186C 43800000 (Original Code, best for VGA)
or
0231186C 438E38E4 for equivalent to 720x480 (DVD resolution)
or
0231186C 43700000 for equivalent to 854x480 (Actual 16x9)

Big thanks to shenmuedojo!

 

Why do you say 8043 is better for vga? Isn't it a bit too wide? 7043 is the proper 16:9 isn't it?

 

I got all codes (+description) from shenmue dojo and haven't tried any of these so far.So I can't really tell you why its better when using vga. The original source of all shenmue codes posted above: http://www.shenmuedojo.net/forum/viewtopic.php?f=37&t=49228

 

Awesome!!!! it does work!! Thanks a lot!

Also, could this be done in other games? or at least Shenmue I&II Pal?


Another game
SONIC SHUFFLE PAL
02110B4C----3F400000

4x3


16x9


Extra geometry with no clipping, even the hud is autoadjusted to 16x9!
Beautiful

 

The automatic ratio switcher is awesome yzb, especially for a game like Shenmue where there's a lot of clipping, this way you can disable it if it gets annoying in some places.

It'd still be awesome to increase the fov that's used to calculate clipping, but it might be incredibly complex to do so.

 

Does that mean that snow appears only when appropriate or is there gonna be snow all the time?

 

You can't use Codebreaker or any other cheat device with Bleemcast. That being said, there are widescreen hacks for PSX games, you'd be better off getting patched versions of the games themselves.

That was the original plan, but so many came in so fast that I felt like a Wiki page somewhere would be a good idea since I'm not always going to keep up with them. I have somewhere in mind, I need to ask them if it would be appropriate.

Meanwhile, yeah, I can update the main post anyway.

8043 is less wide than 7043. The default value is A043, we're decreasing the value to crush the view horizontally to make it appear wider.

I recommended 8043 for VGA because at least on my TV, there are still some black borders on the side by default. I noticed with the video Shenmue Dojo captured on hardware, their capture hardware has small black borders too. It's wider than 4x3 but since it doesn't quite fill the screen completely. Composite doesn't have this problem, nor does an emulator.

8043 was the original value I posted before realizing it wasn't technically correct. I picked it because it looked right on my TV, I hadn't done the math to see that it wasn't. I basically provided all 3 options, although the 720x480 one is kind of pointless.

 

@Esppiral

If know the memory address
Any game can be implemented

 

Wow it is like magic
Could you give us a short brief of how to insert the code?

 

I've updated the first post with a link to a Wiki page on Sega Retro will all codes posted in this thread so far, credited to who posted them:
https://segaretro.org/List_of_Dreamcast_Widescreen_Codes

It's a wiki, so feel free to register and add to it. I limited it to the 16x9 versions of the codes, users will need to use different values if they prefer different aspects. (I can add a section describing that on the page at some point, unless someone else does it first.)

I'd like to do codes for a couple of un-touched games at some point over the next week, but that'll only be if time permits. I upgraded my primary hard drive on Wednesday and had some difficulties during my process of getting everything set back up. Some were my fault, although I ran into 3 situations that make me cautious about whether or not the drive is ok. (2 were complete freezes, mouse cursor only, couldn't open any programs or shut down / restart without killing power. The final time was I ran CrystalDiskMark to "test" the drive, and somehow my non-windows partition on the same drive got partially overwritten as if the tool decided it was free space to use for performance testing.) I think I'm back up with everything as normal again, but if something goes wrong again I might end up switching back to my old drives.

 

@Esppiral
In reading the key of the program to insert a key combination can be judged


PS:The revised values may not be correct, you can modify the debug

Blue Stinger (JP) (SEGA Enterprises) (1999) [HDR-0003] [497-4365-50003-0]
0x022D6D80 3F40000000


Death Crimson 2 - Meraniito no Saidan (JP) (Ecole) (1999) [T-23201M] [451-2435-00003-7]
0x02819F44 4380000000


Death Crimson OX (US) (Sammy USA) (2001) [T-2401N] [80-8777-72401-9]
0x028BD5B4 43800000000



Shadow Man (US) (Acclaim Entertainment USA) (1999) [T-8106N]
0x022BFB54 3F400000000



TimeStalkers (EU) (2000) [MK-51011-53] [506-0004-76027-5]
0x0214EFA8 43a00000000


Zusar Vasar (JP) (RealVision) (2000) [T-43301M]
0x024B0218 3F40000000

 

I created some days ago other wiki

http://www.elotrolado.net/hilo_ho-formato-panoramico-en-juegos-de-dreamcast_2131113

 

Could you please elaborate a little bit more? A little tuto would be appreciated

 

2 new ones, also added to the Wiki. Both lines are required, these games scale vertically so it's necessary to zoom out then expand vertically to produce the correct aspect ratio.

Sonic Adventure 2 (US)
0228DEF8 43F00000
0228DF28 3f400000

Jet Grind Radio (US)
0232E0FC 43F00000
0232E12C 3F400000

Also, congratulations to everyone who helped out. In around 2 weeks, we've managed to make over 50 widescreen codes.

 

@Esppiral

Need to debug the game with EMU, set up to read and write key memory interrupt to find the relevant procedures of the insertion point
Specifically, the value of which is the key to debug the game to read and write procedures can not find? Or write the assembly process key?



@S4pph4rad
I think, after finding the right address, we can increase or decrease the size by the combination of keys, and not all games can be.
For example

Jet Grind Radio (US)
0232E0FC 43F00000 ±0x100000

Maximum 44F00000

Minimum 43000000

0232E12C 3F400000 ±0x100000

Maximum 44F00000

Minimum 43000000

 

I uploaded a hack game，welcome to test

Death Crimson OX (US)

Press L or R or Y to adjust the angle of view as well as the screen



https://mega.nz/#!KF1QSDiT!RFSQQsHu-BdTcT2F4kOFx1nwNiDX61Hq0ejVK_bNqbI

 

Finally...
HEAD HUNTER PAL
0223FCC4----44558000

While I was at it, I stumbled upon this, I also found a debug menu for maken X xD




WORD OF BERSEK PAL (this is a fix, now it shows propper 16x9)
02140F74----43FA0000
02140FA4----3F400000


GRANDIA 2 PAL
023FB91C----3FA66666
023FB8E0----3F400000

These three were tough T_T

 

All these codes are nice.
I think we should write a little loader program to patch these game directly in memory, what do you think?

For example:

• The 'loader' loads the game in memory to its proper location (see below)
• Then It reads a small 'patch.txt' file containing the necessary patch address then patchs the game
• Then it executes the patched game.

We need to pay attention of the load address (0x8c010000 or 0x0c010000). So the loader must be loaded from another location in RAM to avoid RAM violations.

Maybe we should add a little selection menu allowing us to run the game with standard output or 16:9 codes...?